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209s10a12

# 209s10a12 - DCGN209-Spring’10 Homework#12 p 1 of 2...

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Unformatted text preview: DCGN209-Spring’10: Homework#12 p. 1 of 2 Hand-In Problems Due: 2:00 PM, Friday April 30, 2010 A. In this problem you will address one of the “blanks” in the attached table – the pressure at the triple point for methanol, CH 4 O. 1. (15 pts) Calculate EQ 298 P , the equilibrium vapor pressure of liquid methanol. 2. (7 pts) Use the results of #1 to calculate ∆ vap H of liquid methanol. 3. (8 pts) Estimate the pressure at the triple point for methanol. B. In this problem we will calculate EQ 298 P , the equilibrium vapor pressure of liquid CO 2 at 25.00 C; this will be the minimum pressure needed (at ambient conditions) to liquefy CO 2 in preparation for pumping it underground (carbon sequestration). Some additional data is given below. ρ [CO 2 (s)] = 1.50 g cm-3 . ρ [CO 2 (L)] = 1.179 g cm-3 . 1. (15 pts) Calculate ∆ fus H of solid CO 2 . 2. (7 pts) Calculate ∆ vap H of liquid CO 2 ....
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209s10a12 - DCGN209-Spring’10 Homework#12 p 1 of 2...

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